EP 0974205 A1 20000126 - ECHO REDUCING PHONE WITH STATE MACHINE CONTROLLED SWITCHES
Title (en)
ECHO REDUCING PHONE WITH STATE MACHINE CONTROLLED SWITCHES
Title (de)
ECHOREDUZIERENDES TELEFON MIT DURCH ZUSTANDMASCHINEN GESTEUERTEN SCHALTERN
Title (fr)
POSTE TELEPHONIQUE REDUCTEUR D'ECHO DOTE D'INTERRUPTEURS COMMANDES PAR L'ETAT DE L'APPAREIL
Publication
Application
Priority
- SE 9800332 W 19980224
- SE 9700873 A 19970311
Abstract (en)
[origin: WO9840974A1] The purpose of the present invention is thus to reduce the echo introduced by cross-talk. The problem described above, with how to reduce the echo introduced by cross-talk is solved by to the microphone and to the speaker introduce switches controlled by a state-machine which take as input the signal energy of the signal from the microphone, a VAD flag of the signal from the microphone, the signal energy of the signal to the speaker and a VAD flag of the signal to the speaker.
IPC 1-7
IPC 8 full level
H04B 3/20 (2006.01); H04B 3/23 (2006.01); H04M 1/60 (2006.01); H04M 9/08 (2006.01); H04R 3/02 (2006.01)
CPC (source: EP)
H04M 9/08 (2013.01)
Citation (search report)
See references of WO 9840974A1
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9840974 A1 19980917; AU 6426498 A 19980929; AU 735505 B2 20010712; BR 9808240 A 20000516; CA 2283590 A1 19980917; CN 1255255 A 20000531; EP 0974205 A1 20000126; JP 2001514823 A 20010911; SE 511650 C2 19991101; SE 9700873 D0 19970311; SE 9700873 L 19980912; TW 407435 B 20001001
DOCDB simple family (application)
SE 9800332 W 19980224; AU 6426498 A 19980224; BR 9808240 A 19980224; CA 2283590 A 19980224; CN 98804832 A 19980224; EP 98909895 A 19980224; JP 53949498 A 19980224; SE 9700873 A 19970311; TW 87103302 A 19980306